OAKLAND, Calif. (KRON) – All east and westbound lanes on I-580 in Oakland were blocked off due to police activity on Monday evening.

Authorities reported that High Street was also blocked off.

The California Highway Patrol issued a traffic alert around 5:03 p.m.

Around 6:45 p.m., all lanes were reopened.

No other details have been released at this time — We will continue to update this story.